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Shambaugh, Robert

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Robert L. Shambaugh


Professor

Education
Ph.D. Chemical Engineering (1976)
Case Western Reserve University 
B.S. Chemical Engineering (1970)
Case Western Reserve University
Engineer (1970-73)
E.I. du Pont de Nemours & Co. 

Experience
Assistant Professor; Syracuse University (1976-78);
Research Engineer and Senior Research Engineer, E.I. du Pont de Nemours & Co. (1978-84);
Director, Center for Polymer and Fiber Research (1987-present).

CONTACT
shambaugh@ou.edu 
(405) 325-5811

My research interests are in polymer science. An important goal of this research is the development of polymeric "superfibers." One method we are using to produce superfibers is the melt blowing process. In melt blowing, a high velocity gas stream impacts upon a stream of molten polymer as the polymer exits as a fine capillary. The result of this impact is that the polymer rapidly (in about 50 microseconds) attenuates into fiber strands as fine as 0.1 micron in diameter.

Extremely interesting and potentially very strong crystal structures are formed under these high strain rate conditions. With appropriate energy, momentum, and continuity equations, we are modeling the rheological behavior of the fiber formation process. We use high speed photography and LDV (laser Doppler velocimetry) to do on-line measurements of the melt blowing process. Off-line, we analyze the fibers with DSC, WAXS, SEM, and other analytical techniques.

Another process we use is producing superfibers through the gel spinning process. Gel spinning involves the spinning of a dilute solution of a polymer (e.g., high molecular weight polyethylene) into a water bath. In a continuous process, the fiber is routed first through a water bath, then into a hot oven, and finally into a windup roll. The trick is to optimize polymer crystallization, remove the solvent, and keep the fiber from breaking. From a mathematical standpoint, the process is an interesting combination of heat transfer, mass transfer, and momentum transfer. We have produced in our laboratory a gel-spun fiber that is 10 times as strong as steel.

Selected Publications

Foley, Kayla A., and Shambaugh, Robert L., “Fibers from Melt Blowing Dies with Louvers”, Textile Research Journal, October, 2018

Shambaugh, R.L. “Improving the Melt Blowing Process by Modifying the Air Field during Melt Blowing”, U.S. Patent US 2018/0237954 A1, August 23, 2018.

“Image-based Modeling: A Novel Tool for Realistic Simulations of Artificial Bone Cultures”, Taseen Alam, Quang Long Pham, Vassilios Sikavitsas, Dimitrios Papavassiliou,  Robert Shambaugh, and Roman Voronov, Technology Communication, Volume 4, Number 4, pp. 229-233, December 2016, World Scientific Publishing Co.

Shambaugh, Robert L., Krutty, John D., and Singleton, Shawn M., “Melt Blowing Dies with Louvers”, Ind. Eng. Chem. Res., 2015, 54 (51), pp 12999–13004.

Voronov, Roman; VanGordon, Samuel; Shambaugh, Robert; Papavassiliou, Dimitrios; Sikavitsas, Vassilios “3D Tissue Engineered Construct Analysis via Conventional High Resolution MicroCT without X-Ray Contrast”, Tissue Engineering, 2013

Shambaugh, B. R., Papavassiliou, D.V., and Shambaugh, R. L., “Modifying Air Fields to Improve Melt Blowing”, Ind. Eng. Chem. Res., 2012, 51, 3472-3483.

Shambaugh, B. R., Papavassiliou, D.V., and Shambaugh, R. L., “Next-Generation Modeling of Melt Blowing”, accepted by Ind. Eng. Chem. Res., September 2011. 

VanGordon, Samuel, B.; Voronov, Roman S.; Blue, Taren B.; Shambaugh, Robert L.; Papavassiliou, Dimitrios V.; Sikavitsas, Vassilios I., “Effects of Scaffold Architecture on Preosteoblastic Cultures under Continuous Fluid Shear”, Ind. Eng. Chem. Res., 2011, 50 (2), 620–629.

Marla, V.T., Shambaugh, R.L., and Papavassiliou, D.V., Online Measurement of Fiber Diameter and Temperature in the Melt-Spinning and Melt-Blowing Processes, Ind. Eng. Chem. Res., 200948(18), 8736-8744.

Marla, V.T., Shambaugh, R.L., and Papavassiliou, D.V., Unsteady State Heat Transfer from Cylinders to Air in Normal and Parallel Flow, Ind. Eng. Chem. Res., 200948(8), 4119-4126.

Krutka, H. M.; Shambaugh, R. L.; Papavassiliou, D. V. ”Effects of the Polymer Fiber on the Flow Field from a Slot Melt Blowing Die”, Ind. Eng. Chem. Res., 2008, 47(3), 935-945.

 Diana L. Ortiz and Robert L. Shambaugh,”Characterization of Fibers Produced from Blends of Polybutylene and Polypropylene”, Journal of Engineered Fibers and Fabrics, 20072(3), 29-39.

 Beard, Jessica H., Shambaugh, Robert L., Shambaugh, Brent R., and Schmidtke, David W.,“On-Line Measurement of Fiber Motion During Melt Blowing”, Ind. Eng. Chem. Res., 2007,46(22),7340-7352.

 Newman, Gerard K., Harwell, Jeffrey H., and Shambaugh, Robert L., Method for forming a fibers/composite material having an anisotropic structure, U. S. patent #7,198,745, April 3, 2007.

 Krutka, Holly M., Shambaugh, Robert L., and Papavassiliou, Dimitrios, “Effects of the Polymer Fiber on the Flow Field from an Annular Melt Blowing Die”, Ind. Eng. Chem. Res., 2007,46(2), 655-666.

 Marla, Vishnu T., Shambaugh, Robert L., and Papavassiliou, Dimitrios, “Use of an Infrared Camera for Accurate Determination of the Temperature of Polymer Filaments”, Ind. Eng. Chem. Res., 2007, 46(1), 336-334.

 Alvarez-Barreto, Jose H.; Linehan, Shawna N., Shambaugh, R.L, Sikavitsas, Vassilios I., “Flow Perfusion Improves Seeding of Tissue Engineered Scaffolds of Different Architectures”, Annals of Biomedical Engineering200735, 429-442.

 Marla, Vishnu T., Shambaugh, Robert L., and Papavassiliou, Dimitrios, “Using Swirl Dies to Spin Solid and Hollow Fibers”, Ind. Eng. Chem. Res.200645(7), 2331-2340.

 Marla, Vishnu T., Shambaugh, Robert L., and Papavassiliou, Dimitrios, “Modeling the Melt Blowing of Hollow Fibers”, Ind. Eng. Chem. Res.200645(1), 407-415.

 Krutka, Holly M., Shambaugh, Robert L., and Papavassiliou, Dimitrios, “Analysis of the Temperature Field from Multiple Jets in the Schwarz Melt Blowing Die using Computational Fluid Dynamics”, Ind. Eng. Chem. Res., 200645(14), 5098-5109.

 Shambaugh, R.L., “Nanotube/Matrix Composites and Methods of Production and Use”, U. S. patent #7,001,556, February 21, 2006.

 Krutka, Holly M., Shambaugh, Robert L., and Papavassiliou, Dimitrios,  “Analysis of Multiple jets in the Schwarz Melt Blowing Die using Computational Fluid Dynamics”, Ind. Eng. Chem. Res.200544(23), 8922-8932.

 Ortiz, Diana, and Shambaugh, Robert L., “Melt Spun Polybutylene Fibers and Nonwovens”, Int. Nonwovens J., 200514(4), 36-54.

 Moore, Eric, M., Papavassiliou, Dimitrios V., and Shambaugh, Robert L.  “Analysis of a Converging, Annular, Isothermal Melt Blowing Jet Using Computational Fluid Dynamics” Int. Nonwovens J., 200514(3), 2-11.

 Krutka, Holly M., Shambaugh, Robert L., and Papavassiliou, Dimitrios, Using Computational Fluid Dynamics to Simulate Flow Fields from Various Melt Blowing Dies, Int. Nonwovens J., 200514(1), 2-8.

 R. Chhabra and R.L. Shambaugh,”Probabilistic Model Development of Web Structure Formation in the Melt Blowing Process”, Int. Nonwovens J., 200413(3), 24-34.

 Moore, Eric, M., Papavassiliou, Dimitrios V., and Shambaugh, Robert L.  Air Velocity, Air Temperature, Fiber Vibration and Fiber Diameter Measurements on a Practical Melt Blowing Die, Int. Nonwovens J., 2004, 13(3), 43-53.

 Shambaugh, Robert L., O’Rear, Edgar A., and Lobban, Lance L.,”Chemical Engineering at the University of Oklahoma”, Chemical Engineering Education, Summer 2004, pp. 162-168.

 Moore, Eric, M., Shambaugh, Robert L., and Papavassiliou, Dimitrios V., Ensemble Laser Diffraction for Online Measurement of Fiber Diameter Distribution during the Melt Blowing Process, Int. Nonwovens J., 200413(2), 42.

 Tate, B.D., and Shambaugh, R.L., "Temperature Fields below Melt Blowing Dies of Various Geometries", Ind. Eng. Chem. Res.200443(17), 5405-5410.

 Krutka, Holly M., Shambaugh, Robert L., and Papavassiliou, Dimitrios, “Effects of Temperature and Geometry on the Flow Field of the Melt Blowing Process”, Ind. Eng. Chem. Res.200443(15), 4199-4210.

 Moore, Eric, M., Shambaugh, Robert L., and Papavassiliou, Dimitrios V., “Analysis of Isothermal Annular Jets: Comparison of CFD and Experimental Data”, J. Appl. Polym. Sci.200494, 909-922.

 Marla, Vishnu T., and Shambaugh, Robert L., “Modeling of the Melt Blowing Performance of Slot Dies”, Ind. Eng. Chem. Res.200443(11), 2789-2797.

 Moore, Eric M., Ortiz, Diana L., Marla, Vishnu T., Shambaugh, Robert L., and Grady, Brian P., “Enhancing the Strength of Polypropylene Fibers with Carbon Nanotubes”, J. Appl. Polym. Sci.200493, 2926-2933.

 Grady, Brian, P., and Shambaugh, Robert L., “Carbon Nanotubes in Fiber-Forming Polymers”, accepted by J. Polym. Sci., Polymer Physics2003.

 Krutka, Holly M., Shambaugh, Robert L., and Papavassiliou, Dimitrios V., “Effects of Die Geometry on the Flow Field of The Melt Blowing Process”, Ind. Eng. Chem. Res.200342(22), 5541-5553.

 Marla, Vishnu T., and Shambaugh, Robert L., “Three-dimensional Model of the Melt Blowing Process”, Ind. Eng. Chem. Res.200342(26), 6993-7005.

H. Krutka, D. Papavassiliou and Shambaugh, R.L., "Analysis of a Melt-Bowling Die: Comparision of CFD and Experiments", Ind. Eng. Chem. Res., 2002, 41, 5125-5138.

Kearns, J.C. and Shambaugh, R.L., "Polypropylene Fibers Reinforced with Carbon Nanotubes", accepted by J.Appl. Polym. Sci., February, 2002.

B.P. Grady, F. Pompeo and D. Resasco and Shambaugh, R.L., "Nucleation of Polypropylene Crystallization by Single-walled Carbon Nanotubes," J. Phys. Chem. B, 2002, 106, 5852-5858.

de Rovere, Anne, Grady, B.P., and Shambaugh, R.L., "The Influence of Processing Parameters on the Properties of Melt-Spun Polypropylene Hollow Fibers", J.Appl. Polym. Sci., 2002, 83, 1759-1772.

de Rovere, Anne, and Shambaugh, R.L., "Melt-Spun Hollow Fibers for Use in Nonwoven Structures", Ind. Eng. Chem. Res., 2001, 40(1), 176-187.

de Rovere, Anne, and Shambaugh, R.L., "Melt Spun Hollow Fibers: Modeling and Experiments", Polym. Eng. Sci., 2001, 41(7), 1206-1219.

Newman, G.K., Shambaugh, R.L., and Harwell, J.H., "Method for Forming a Fibers/Composite Material Having an Anisotropic Structure", U.S. Patent #6,299,812, October 9, 2001.

de Rovere, Anne, Shambaugh, R.L., and O'Rear, E.A., "Investigation of Gravity Spun, Melt Spun, and Melt Blown Polypropylene Fibers Using Atomic Force Microscopy", J. Applied Polymer Sci., 2000, 77, 1921-1937.